How to block Instant Messaging file sharing?

[jong_r0602]

Is it possible to block file transfer using IM (AOL,yahoo, etc) using PIX firewall?

Thanks,

Jong

[mj11]

Hi Jong

Please see the following link, you would need to be running 7.x of the software.

http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a00808c38a6.shtml

Regards

[john.dowson]

Just to add to that. Using MPF, you can be as granular as to allow IM traffic whilst blocking file-transfers.

The link mj11 provided is a good starting point. Post your MPF config (class-maps/policy-maps) if you have any problems.

John